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People who are at an increased risk for serious complications include infants, young children and people with compromised immune systems.

Symptoms to watch for include diarrhea, cramps, nausea and headaches. If you experience any of these symptoms, contact your health care provider, said officials.

Officials are recommending people switch to bottled water or boil their water for more than a minute, then let it cool before drinking it. Boiled or bottled water also should be used for making ice cubes, brushing teeth, washing dishes and food preparation until further notice.